# CVE-2026-84901: WordPress Eventin plugin authorization bypass in REST routes

Source: https://junglewise.ai/threats/cve-2026-84901-wordpress-eventin-plugin-authorization-bypass-in-rest-routes  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-05. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-84901 · Severity: medium · CVSS 4.9 · Published 2026-09-05

The Eventin WordPress plugin for event management fails to properly authorize REST API endpoints, allowing contributor-level users to hijack the website's homepage and manipulate event taxonomies they should not be able to edit. This could allow a low-privileged attacker to redirect all site visitors to an unauthorized event or inject unauthorized content into the event management system.

## Quick answers

**Is CVE-2026-84901 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-84901 being exploited in the wild.

**How severe is CVE-2026-84901?** Medium severity, with a CVSS score of 4.9, published 5 September 2026.

**Which products and versions are affected?** Eventin Eventin before 4.1.22.

**Is there a fix for CVE-2026-84901?** A patch was published on 2026-09-05: Fixed in version 4.1.22 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-84901 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-84901?** Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a missing authorization (CWE-862) issue in Eventin's REST API endpoints for event management. Affected routes include the homepage-setting endpoint and taxonomy manipulation endpoints for event categories, tags, and speaker categories. An attacker with contributor-level access (requires valid WordPress account) can craft authenticated REST requests with a valid nonce to modify the site's front-page setting to point to events they do not own, and create/edit/delete global event and speaker taxonomy terms without the required capabilities. The attack requires authentication but no additional user interaction. The vulnerability was fixed in version 4.1.22.

## Affected products

- Eventin Eventin before 4.1.22

## Timeline

- 2026-09-03: disclosed
- 2026-09-05: patched: Fixed in version 4.1.22

## References

- [https://wpscan.com/vulnerability/b1906fd4-82ab-435f-bb07-e8f2db402029/](https://wpscan.com/vulnerability/b1906fd4-82ab-435f-bb07-e8f2db402029/)